Atomizing device



May 21, 1935- R. E. DELLING 2,001,817

ATOMIZING DEVICE Filed on. 12, 1955 llll H Juzenlorl:

Patented May 21, 193.

PATENT OFFICE ATOMIZING DEVICE Richard Emil Delling, Erfenschlag,

near Chemnitz, Germany, assignor of on -half to Emil Freytag, Zwickau,Germany Application October 12, 1933, Serial No. 693,325

In Germany April 6, 1932 1 Claim.

This invention relates to an atomizing device for internal combustionengines.

The device according to the invention serves for producing a mixture ofcrude oil and air by means of a nozzle which feeds the mist produced atits mouth by way of a rotary atomizer wheel fitted with oblique ribs tothe combustion space of the engine. It has been proposed already tosupply the mist to the ribs of such a wheel from without, but thatinvolves the possibility of the formation of large drops of fuel withinthe mixture prior to the entrance thereof into the inner space of theatomizer wheel.

According to the invention, the opening of the atomizer nozzle extendsinto the inner space of the wheel provided with ribs and is directedtowards the ribs which have sharp edges facing the inner space. The mistproduced at the mouth of the nozzle is thus guided immediately after itsproduction, through the spaces between the obliquely disposed ribs, fromthe inside to the outside and thence to the engine so as to prevent theformation of drops in the mixture coming from the nozzle. By providingthe ribs with a fine edge as sharp as a knife greater refinement of themist is aimed at. Although it has been proposed already to manufacturethe ribs from strips of sheet iron whose edges are sharp per se, a stillfiner construction of the edges will refine the mist still more and leadto better eiliciency in combustion. Still greater refinement of the mistis produced by causing the air gap between the ribs to extend obliquelyto the direction of the axis of the atomizer wheel. k

By way of example, the invention is illustrated in the accompanyingdrawing, in which Figure 1 a is a vertical section of an atomizer wheelin a Fig. 2, a section on the line A-B, of Fig. 3, a section on casinFig. 1, seen from the front; the line C-D, of Fig. i, seen from thefront; and Fig. 4, a view of an atomizer wheel provided with ribs andair gaps between the ribs, which extend obliquely to the axial directionof the atomizer wheel.

Referring to the drawing, the atomizer wheel 2 is rotatably disposed inthe casing l and rotated at high speed by means of the toothed gearing3, 3' driven by an electric motor, not shown. The atomizer wheel 2 has ahollow inner space 4 and its wall is formed from ribs 5 which arearranged in oblique direction to facilitate the cutting up of themixture. Asshown in Fig. 4 the ribs 5 and the air gaps between the ribsextend obliquely to the axis of rotation of the wheel. as shown in Fig.2, the ribs 5 in the hollow space 4 have edges 8 of knife-like keenness,and the wheel 2 turns in the direction of the arrow E. The crude oilserving as fuel is injected or drawn through a nozzle 9 guided in thecover ill of the casing I and terminating approximately in the center ofthe hollow space 4 against the sharp edges 8 of the wheel 2, caught andcut up by the edges 8, and then by the centrifugal action of the wheel 2driven out through the gap 6 and completely atomized. Between the coveri0 and the casing i a disc i2 provided with perforations II is disposedand fitted with a slide I3 possessing the openings i4. When the openingsll of the slide [3 are fully or partly in register with the openings llof the firmly arranged disc l2, air varying in quantity is supplied tothe hollow space 4. On the other hand, when the slide openings H areoutside the disc openings Ii, air supply is throttled.

I claim:-

A device for atomizing fuel, particularly crude oil, in an internalcombustion engine, comprising a casing, an atomizer wheel having ahollow inner space and being rotatably disposed in said casing, aplurality of obliquely arranged ribs with intervening air gaps formingthe wall of said wheel, said air gaps extending obliquely to the axialdirection of said atomizer wheel, knife-like edges facing the hollowinner space of said wheel and forming part of said ribs, a nozzle soformed as to produce a mist at its mouth, and'disposed to deliver saidmist'to said wheel and thus to the combustion space, the mouth of saidnozzle being disposed obliquely to the axis of said wheel and extendinginto the inner space thereof in the direction towards said ribs, andmeans for regulating the air supply to the inner hollow space of saidwheel.

RICHARD EMIL DELLING.

